Cybersecurity, Information Assurance, and Big Data Based on Blockchain

Blockchain is a secure, immutable, and tamper proof technology that is gaining rapid momentum in the cybersecurity area. With the use of blockchain, participants are guaranteed information security for health data, insurance data, auction data, etc. with the blockchain hash function, which makes data tamper proof. Because users rely on a consensus function where all users must be informed of and approve any changes to data on the blockchain, tampering is almost impossible. The recent development of smart contracts, which are bits of code written into the blockchain, further tightens security on blockchain. This paper introduces the roles, applications, and challenges of blockchain. Cybersecurity and information assurance based on blockchain are presented. Blockchain-based big data security and blockchain-based healthcare cybersecurity are discussed.